【Daily Question】Chemical Analysis Version, 2021.5.12

2021-05-12View Original

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The reasons for strictly controlling the heating intensity and distillation rate during the distillation process do not include ( ). A. Excessive heating intensity or too rapid heating results in a temperature reading that is not the boiling temperature of the oil under external atmospheric pressure, leading to an overestimated value. B. If the heating intensity remains high, overheating occurs, the dry point rises, and it becomes difficult to obtain accurate measurements. C. Too slow heating causes the distillation temperatures at all points to decrease, as well as prolonging the measurement time. D. Since the properties of oils vary and their components differ, there is no need to control the heating intensity. D

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【Daily Question】Chemical Analysis Version, 2021.5.12

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